55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#pragma once
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// ============================================================================
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// terrain.h - 程序化地形
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// ============================================================================
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#include <d3d11.h>
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#include "../Rendering/mesh.h"
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#define TERRAIN_MAX_HEIGHTMAP_SIZE 256
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typedef struct {
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float* data;
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int size;
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} TerrainHeightmap;
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typedef struct {
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int chunks_x;
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int chunks_z;
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int vertices_per_chunk;
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float chunk_size;
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float height_scale;
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float uv_scale;
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} TerrainConfig;
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typedef struct {
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TerrainConfig config;
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TerrainHeightmap heightmap;
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Mesh* mesh;
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ID3D11Device* device;
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} Terrain;
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// 默认配置
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TerrainConfig terrain_default_config(void);
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// 高度图
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TerrainHeightmap terrain_heightmap_create(int size);
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void terrain_heightmap_destroy(TerrainHeightmap* hm);
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void terrain_heightmap_fill_noise(TerrainHeightmap* hm, int seed, float scale, float amplitude);
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float terrain_heightmap_sample(const TerrainHeightmap* hm, float x, float z);
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// 地形对象
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Terrain* terrain_create(ID3D11Device* dev, const TerrainConfig* config);
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void terrain_destroy(Terrain* terrain);
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// 从世界坐标采样高度 (用于相机/角色贴地)
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float terrain_get_height(const Terrain* terrain, float world_x, float world_z);
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// 网格生成
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Mesh* terrain_mesh_create(ID3D11Device* dev, const TerrainHeightmap* hm, float size, float height_scale, float uv_scale);
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// 噪声工具（供分块管理器复用）
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float hash_noise(int x, int z, int seed);
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float fbm_noise(float x, float z, int seed, int octaves, float persistence);
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